Table 2 Demographic characteristics of patients in the combined and isolated groups (n = 33)^b

Age (years)

43.5 ± 12.2

42.9 ± 11.9

0.904^a

Gender

 Male

8 (72.7%)

16 (72.7%)

-

 Female

3 (27.3%)

6 (27.3%)

-

Side

 Right

5 (45.5%)

10 (45.5%)

-

 Left

6 (54.5%)

12 (54.5%)

-

 BMI (kg/m²)

24.7 ± 1.2

24.6 ± 1.9

0.954^a

Mechanism of injury

 Fall

5 (45.5%)

17 (77.3%)

-

 Accident

6 (45.5%)

3 (13.6%)

-

 Twist

0

2 (9.1%)

-

 Time to treatment (days)

101.7 ± 168.4

47.3 ± 153.3

0.104^a

 Early-stage surgery

8 (72.7%)

18 (81.8%)

-

 Delayed treatment

3 (27.3%)

4 (18.2%)

-

 Duration of surgery

35.3 ± 8.5

32.8 ± 7.5

0.318^a

 Follow-up time (years)

5.5 ± 1.2

4.9 ± 1.3

0.187^a

Complications

 Knee stiffness

1 (9.1%)

0

-

 Knee arthritis

1 (9.1%)

0

-

 ONFH

1 (9.1%)

0

-